added wcs bands metadata

wcs/__init__.py

@@ -78,6 +78,10 @@ class WCS(OWS):
                 lyrobj.type = mapscript.MS_LAYER_RASTER
                 lyrobj.dump = mapscript.MS_TRUE
                 lyrobj.template = "foo"
+                
+                # bands
+                if layer.axisDescriptions:
+                    self._addBandsMetadata(layer, lyrobj)
                 if ds:
                     self.getTime(ds,lyrobj)
                 cls = mapscript.classObj(lyrobj)
@@ -150,3 +154,12 @@ class WCS(OWS):
             lyrobj.tileindex = os.path.join(tindex,tindex+".shp")
         else:
             logging.info("No time subset found")
+
+    def _addBandsMetadata(layer, lyrobj):
+        """Adds wmcs_band* metadata to the lyrobj"""
+
+        for i in layer.axisDescriptions:
+            if layer.axisDescriptions[i].name.toLowerCase() == "bands":
+                lyrobj.setMetadata("wcs_bandcount",len(layer.axisDescriptions[i].values))
+                lyrobj.setMetadata("wcs_rangeset_axes",layer.axisDescriptions[i].name)
+                lyrobj.setMetadata("wcs_rangeset_name",layer.axisDescriptions[i].name)